Crystal structure of (E)-2-(furan-2-ylmethylidene)-2,3,4,9-tetrahydro-1H-carbazol-1-one

Abstract

The title compound, C 17 H 13 NO 2 , crystallizes with two conformationally very similar independent molecules (A and B) in the asymmetric unit. In the crystal, the individual molecules are linked by pairs of N-HÁ Á ÁO hydrogen bonds forming A-A and B-B inversion dimers, with R 2 2 (10) rings. They stack alternately up the a-axis direction and are linked by C-HÁ Á Á interactions, forming sheets parallel to the ab plane.